In our personal lives, we often make pledges. We gladly agree to do a friend
a favor. We indicate that we would like to spend an evening with an acquaintance.
We communicate our readiness to join a business venture.
All of a sudden, circumstances change. There is no longer time for that favor.
A difficult day drained the energy that a night out demands. A more attractive
option emerges. An unforeseen crisis clamors for our attention. A financial
proposal arises from another field that dwarfs the first venture.